Abstract
Electrical conductivity of LiMn2O4, which is a promising cathode active material for lithium ion batteries, was monitored in situ during electrochemical lithium extraction and reinsertion reactions in 1 M LiClO4 propylene carbonate solution. The in-situ conductivity measurement was achieved by means of an interdigitated microarray electrode coated with a uniform and dense film of LiMn2O4. The conductivity of Li(1-x)Mn2O4 was found to exhibit a peak-shaped profile as a function of lithium content. The conductivity of Cr3+-doped spinel, LiMn1.95-Cr0.05O4, decreased monotonically with decreasing lithium content. These results are discussed by considering the effects of phase transformation on the conductivity of these materials.
Original language | English |
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Pages (from-to) | 1367-1371 |
Number of pages | 5 |
Journal | Chemistry of Materials |
Volume | 12 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2000 |
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry